No problem, we've got 3841 and 4915 to multiply
3841 × 4915 = 4915 × (3841)
+ 4915 × 1 what gives us 4915
+ 4915 × 40 that results in 196600
+ 4915 × 800 that is equal 3932000
+ 4915 × 3000 giving us 14745000

= 18878515
